Preparation and performance of carboxymethyl cellulose-soybean protein isolate pesticides sustained-release particles

被引：0
|
作者：
Li Z. [1 ]
Ma J. [1 ]
Zhao M. [1 ]
Chen L. [1 ]
Zhou H. [1 ]
Zhou X. [1 ]
机构：
[1] Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 05期
关键词：
Avermectin; Carrier; Nanostructures; PH response; Protein;
D O I：
10.16085/j.issn.1000-6613.2020-1248
中图分类号：
学科分类号：
摘要：
In order to improve pesticide utilization and control pesticide release, a pH responsive particle was designed. 3-aminopropyl triethoxysilane (APTES) was used as a bridge to connect carboxymethyl cellulose (CMC) and soybean protein isolate (SP). Avermectin (AVM) was hydrophobically encapsulated as a model drug to obtain CMC-SP@AVM. The chemical interaction between SP and CMC was confirmed by Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), and differential scanning calorimetric (DSC). Their structural characteristics and stability were investigated through scanning electron microscope (SEM) and zeta potential technique. It found that AVM encapsulated in CMC-SP@AVM particles with average size of 104nm. Ultraviolet-visible (UV-vis) spectroscopy was employed to explore the anti-UV property and encapsulation as well as release behavior, which revealed that the presence of CMC-SP@AVM protected AVM from UV photolysis with encapsulation efficiency of 41.9%. The residual rate of AVM in the CMC-SP@AVM was 117% higher than that of unsealed AVM after irradiating with strong ultraviolet light for 120h. The release rate of AVM was pH responsive. The higher the pH, the faster the release rate. It showed that the release of AVM from CMC-SP@AVM fit to the Elovich kinetic model. The insecticidal activity of CMC-SP@AVM is not significantly different from that of the original drug at the same AVM concentration. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：2739 / 2746
页数：7
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